Extract format_string function.
Extract format_string function and add a test.
Test: run linker-unit-tests
Change-Id: I794a29aaf62e184438ce1a9224b88aa0586c17b5
diff --git a/linker/linker_utils.cpp b/linker/linker_utils.cpp
index 6df5f6d..5bf88e7 100644
--- a/linker/linker_utils.cpp
+++ b/linker/linker_utils.cpp
@@ -36,6 +36,30 @@
#include <sys/stat.h>
#include <unistd.h>
+void format_string(std::string* str, const std::vector<std::pair<std::string, std::string>>& params) {
+ size_t pos = 0;
+ while (pos < str->size()) {
+ pos = str->find("$", pos);
+ if (pos == std::string::npos) break;
+ for (const auto& param : params) {
+ const std::string& token = param.first;
+ const std::string& replacement = param.second;
+ if (str->substr(pos + 1, token.size()) == token) {
+ str->replace(pos, token.size() + 1, replacement);
+ // -1 to compensate for the ++pos below.
+ pos += replacement.size() - 1;
+ break;
+ } else if (str->substr(pos + 1, token.size() + 2) == "{" + token + "}") {
+ str->replace(pos, token.size() + 3, replacement);
+ pos += replacement.size() - 1;
+ break;
+ }
+ }
+ // Skip $ in case it did not match any of the known substitutions.
+ ++pos;
+ }
+}
+
std::string dirname(const char* path) {
const char* last_slash = strrchr(path, '/');